| dc.description.abstract | This master s thesis presents a comparison between impulse noise measurements
and calculations from four well-known propagation models; ISO 9613-2,
NMPB-2008, Harmonoise and Nord2000. The calculated values are compared
to two independent measurements series where the propagation path distances
varied between 20 m and 2 km. Meteorological conditions during the measurements
were not measured in the immediate vicinity of the measurements,
but collected from weather stations in the area. Measurements were carried
out by Forsvarsbygg and details are not included in this report.
The comparison between measurements and calculations is done by computing
the error level, i.e. the difference between measurements and calculations.
Overall the results did not show any clear pattern of dependency between the
error level and the different models or cases of propagation. However, the
average of the results showed that, in the absence of on-site meteorological
information, NMPB-2008 on average predicts the sound levels better than the
other models.
This project report provides a foundation for further research and several
improvements can be done in order to obtain more reliable results. | |
